231322001 has 4 divisors (see below), whose sum is σ = 231352500. Its totient is φ = 231291504.

The previous prime is 231321997. The next prime is 231322019. The reversal of 231322001 is 100223132.

It is a happy number.

231322001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 134003776 + 97318225 = 11576^2 + 9865^2 .

It is a cyclic number.

It is not a de Polignac number, because 231322001 - 2² = 231321997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231322081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5975 + ... + 22323.

It is an arithmetic number, because the mean of its divisors is an integer number (57838125).

Almost surely, 2^231322001 is an apocalyptic number.

It is an amenable number.

231322001 is a deficient number, since it is larger than the sum of its proper divisors (30499).

231322001 is a wasteful number, since it uses less digits than its factorization.

231322001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30498.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 231322001 is about 15209.2735197971. The cubic root of 231322001 is about 613.8642099102.

Adding to 231322001 its reverse (100223132), we get a palindrome (331545133).

The spelling of 231322001 in words is "two hundred thirty-one million, three hundred twenty-two thousand, one".